HP-UX

You would have to use clustered filesystem.
I believe VXFS has clustered VxCFS version ( i never used it)

Depends really what you need.
Perhaps a simple NFS export from one node to another can satisfy your demand ?

If so check /etc/exports and automount in HPUX

I want a LUN of 100Go shared with 2 servers (SRV-1 and SRV-2)

I used StorageWorks Command View EVA
I created a Virtual disk of 100Go (Data) and i presented this LUN to 2 servers
in Vdisk Properties -> Presentation -> I see my Vdisk for SRV-1 and SRV-2

I see on SRV-1 with smh

VG Names Paths Size(GB) Descrip

0/0/0/2/0/0/0.0.0 /dev/dsk/c0t0d0 LVM vg00 1 136.70 HP
0/0/0/5/0/0/0.10.12.0.0.1.0 /dev/dsk/c3t1d0 unused - 8 100.00

How do you think to mount the Lun ?

When i mounted the LUN on the 2 servers, I saw the 2 filesystem but when I created a file on SRV-1, I didn't see it on SRV-2 !










s

You will run

Code:

ioscan -m dsf

That will show you the device special name(s) created for that LUN(S).
Now, you should use volume groups, not mount it.

Notice, if you are using multipath, it automatically discovered, so difference from v2 is that you add only one DSF, the persistent one for SAN redundancy.

Please check LVM HPUX documentation.

In specific cases you let database take care of it, since it can sometimes yield better performance.
That setup is well documented and varies from DB to DB.

You will not see data if you are not using clustered filesystem or similar i belive, but haven't personaly used or made any such setup to advise further.

you cannot mount the same lun on two different mount points at the same time. That would probably corrupt the FS.